Electric switch.



4H HEBERRY ist w. J. MRKHAM.

' ELECTRIC SWITCH. `l APPLICATWN [ILED NOVx 2, 1914.

#1,189,530: f PatentedJuly 4, 1916.

ioA

HERBERT HENRY BERRY,

anion.

manine-riale, envenena),

ELECTRIC S non. l

Specification of Letters iatent.

Patented July 4, 1916.

Application filed November 2, 1914i. Serial No. 369,977.

To all whom t may concern Be it known that we, HERBERT Hanna' Bnanr andWinnaar J lili-'immuun citizcns ot the United Kingdom of Great Britainand reland, and residents of 78 Upper Thames street, London, England7and. of Sulfoll; lVorks, Oozells street, Birmingham, England,respectively, have invented certain new and useful improvements inillectrio Switches, of which the following is a speciication, such aswill enable others skilled in the art to which it appcrtains to make anduse the saine.

rllhis invention relates to electric fused switches and. has vfor .itsobject to provide a simplified construction of quick malte-andlorealrfused switch, which shall be stroi'ig` and of durable character, andwhich the parts thereof maybe easily adjusted, assenr hlechreinmfed andreplaced.

The switch. according to the invention comprises a toggle or knucklejointu the arms oi which are pivcted on a 'inse tridge which is adaptedto he moved into en gaggeiiient with contacts provided preferably withinthe switch casing. l iis arrangement ierinits of the speedy assemblingot the parts during the process of manirtacture; it also permits of Ithespeedy replacement out the parts tor the purpose of renewal, and has thestill 'further advantage ot providing; a revolving switch Contactwhichwill lengthen the life of the switco. by reason ot' the tact thatthe contact can beY txirned into several positions. l'

The invention will reference to the accompanying drawings wherein theinvention is shown as applied to a double pole switch. The double poleswitch has heen selected ior describing the invention in detail but itwill ce understood that the invention can also he applied to single ormultiple pole switches.

flTigure 1 is a section .through the switch casing or box, and Fig. 'i2is a plan view of the toggle mechanism' of the switch.

Referring to the drawings whereon the same reference letters indicatethe same or similar parts, t is the casing or box within which theswitch is mounted. The casing may he ci? any convenient shape and isprov'ded with a cover b. lNithin the casing` a ai d preferably to thecover l) is secured in any suitable manner, as oy pins d, a hownow hedescribed with e sired.

shaped spring c, the ends e, f, of which act upon the ends g, L, of thetoggle or knuckle joint.

ln the preferred form oli the invention for a double pole switch thejoint comprises a central portion y', and the two end portions e, Z. Thecentral portion and preferably the two end portions are composed ofinsulating material, or are insulated and are moved by any suitablemeans such as a rod -m on which a knob or handle 'n is arranged.A lheends of the central portion j are shaped into a concave groove toreceive a cartridge p. The faces ot the portions lc, Z, adjoining theends ot the central portion are also provided with a concave groove toengage the cartridge p.

The baclrwardand forward movement of the central portion j causes thefuse cartridges to engage and he discharged .trom contacts not shownwhich may be xed in the switch casing in any convenient and knownmanner. The cartridges act as pivots between the central portion j ofthe joint and the two end parts 7c and Z9 the grooves in the end partsif: and Z having a small movement on the cartridge. When it is desiredto replace a cartridge fuse it is only necessary to push hack thespring, which may easily loe done by hand, thus releasing the cartridgeand permitting it loeing removed and another one slipped into its place.'lhe central portion may be constructed to carry cartridges, Jfusecarriers or contact hars in addition to the cartridges at its ends andthus a. multiple pole switch is obtained, Generally the depth of thegrooves and the pressure of the springs are sullicient to hold the fusecartridges; against displacement, but additional means for holding orlocking them more or less per-l manently in place may loe provided ifdeot a handle or lever passing through the side or ends of the switchcase, or 1n any other convenient manner.

Any circular form oi2 fuse carrier may be substituted for the fusecartridge and a brass rod or tube may he employed instead of the fusecarrier or fuse cartridge'.

What we claim and desire to secure by Letters Patent is :*a

l. An electric switch comprising in coin-` hination a case, a covertherefor, a spring The joint may be operated by means adapted to bemoved into engagement with joint, and a fuse cartridge between each ofvthe adjacent concave portions on the cen-- tral portion and the outerportion and contacts by said handle. i

2. An electric switch having in combination a case, a. cover therefor,a.bow=

shaped spring secured to said cover, altoggle joint having one end ofeach of the outer portions of the joint pivoted vto said spring theother ends of said outer portions being concave, fuse cartridges betweensaid l`concave portions and concave portions on the central portion ofthe toggle joint, and a handle for moving the joint so as to bring saidcartridges into engagement with contacts.

3. An electric switch comprising in combination a case, a covertherefor, va bowshaped spring secured to said cover', an insulatedtoggle joint having one endv of each of the outer portions of the jointpivoted to said spring, fuse cartridges between said outer portions andthe central portion of the switch, said cartridges being capable ofbeing rotated, and a handle for-moving4 piece toggle joint the centralpiece of which is secured to an operating handle and the end pieces arespring controlled, means being furnished at the adjoining ends of thecentral piece and the end pieces to receive a fuse cartridge which actsas a pivot between the said pieces. y l

5. In an electric switch atoggle joint, the parts of which have mountedupon them cartridge fuses which act as pivots between the parts, saidjoint having a handle by which itis operated. v

6. An electric switchv comprising a three piece toggle joint the centralpiece of which is secured to an operating handle and the end pieces -arespring controlled, means being furnished at the adjoining4 ends of, lthecentral piece and the end pieces toreceive a fuse carrier which acts asa pivot between. the 'said pieces.

In witness whereof we have hereunto set our hands in presence of twoWitnesses.

HERBERT HENRY BERRY; WILLIAM JAMES MARKHAM. Witnesses to H. H. Berry:

RosE OLAM, HENRIETTA CATHERINE HENsoN. Witnesses to W. J. Markham;

CHARLES HENRY ALLWooD,

HAROLD BRADLEY HoL'iTUM.'

